21008072

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{3371}}^1$

素因数の和:3437

約数の個数: 32

約数和(自身を含む): 42487200

約数和(自身を除く): 21479128

約数列:

[1, 2, 4, 8, 19, 38, 41, 76, 82, 152, 164, 328, 779, 1558, 3116, 3371, 6232, 6742, 13484, 26968, 64049, 128098, 138211, 256196, 276422, 512392, 552844, 1105688, 2626009, 5252018, 10504036, 21008072]

約数ペア:

[(1, 21008072), (2, 10504036), (4, 5252018), (8, 2626009), (19, 1105688), (38, 552844), (41, 512392), (76, 276422), (82, 256196), (152, 138211), (164, 128098), (328, 64049), (779, 26968), (1558, 13484), (3116, 6742), (3371, 6232)]